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authorBjörn-Egil Dahlberg <[email protected]>2015-05-14 22:27:33 +0200
committerBjörn-Egil Dahlberg <[email protected]>2015-05-21 15:45:19 +0200
commit34fae93200586f7ffd9799cb8d3c5423e158aa95 (patch)
tree6488954b2cce82b3df270b1badb8292904a3a5bd /lib/compiler/src/beam_jump.erl
parent363c21e8cbd980094f77428bde90de6cec641b12 (diff)
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compiler: Use Maps instead of dict in beam_jump
Diffstat (limited to 'lib/compiler/src/beam_jump.erl')
-rw-r--r--lib/compiler/src/beam_jump.erl26
1 files changed, 16 insertions, 10 deletions
diff --git a/lib/compiler/src/beam_jump.erl b/lib/compiler/src/beam_jump.erl
index c42711a99a..80b2998ddc 100644
--- a/lib/compiler/src/beam_jump.erl
+++ b/lib/compiler/src/beam_jump.erl
@@ -152,14 +152,14 @@ function({function,Name,Arity,CLabel,Asm0}) ->
share(Is0) ->
%% We will get more sharing if we never fall through to a label.
Is = eliminate_fallthroughs(Is0, []),
- share_1(Is, dict:new(), [], []).
+ share_1(Is, #{}, [], []).
share_1([{label,_}=Lbl|Is], Dict, [], Acc) ->
share_1(Is, Dict, [], [Lbl|Acc]);
share_1([{label,L}=Lbl|Is], Dict0, Seq, Acc) ->
- case dict:find(Seq, Dict0) of
+ case maps:find(Seq, Dict0) of
error ->
- Dict = dict:store(Seq, L, Dict0),
+ Dict = maps:put(Seq, L, Dict0),
share_1(Is, Dict, [], [Lbl|Seq ++ Acc]);
{ok,Label} ->
share_1(Is, Dict0, [], [Lbl,{jump,{f,Label}}|Acc])
@@ -188,7 +188,7 @@ clean_non_sharable(Dict) ->
%% a sequence inside the 'try' block is a sequence that ends
%% with an instruction that causes an exception. Any sequence
%% that causes an exception must contain a line/1 instruction.
- dict:filter(fun(K, _V) -> sharable_with_try(K) end, Dict).
+ maps:filter(fun(K, _V) -> sharable_with_try(K) end, Dict).
sharable_with_try([{line,_}|_]) ->
%% This sequence may cause an exception and may potentially
@@ -274,7 +274,7 @@ extract_seq_1(_, _) -> no.
opt([{label,Fc}|_]=Is0, CLabel) ->
Lbls = initial_labels(Is0),
find_fixpoint(fun(Is) ->
- St = #st{fc=Fc,entry=CLabel,mlbl=dict:new(),
+ St = #st{fc=Fc,entry=CLabel,mlbl=#{},
labels=Lbls},
opt(Is, [], St)
end, Is0).
@@ -320,11 +320,11 @@ opt([{test,_,{f,_}=Lbl,_,_,_}=I|Is], Acc, St) ->
opt([{select,_,_R,Fail,Vls}=I|Is], Acc, St) ->
skip_unreachable(Is, [I|Acc], label_used([Fail|Vls], St));
opt([{label,Lbl}=I|Is], Acc, #st{mlbl=Mlbl}=St0) ->
- case dict:find(Lbl, Mlbl) of
+ case maps:find(Lbl, Mlbl) of
{ok,Lbls} ->
%% Essential to remove the list of labels from the dictionary,
%% since we will rescan the inserted labels. We MUST rescan.
- St = St0#st{mlbl=dict:erase(Lbl, Mlbl)},
+ St = St0#st{mlbl=maps:remove(Lbl, Mlbl)},
insert_labels([Lbl|Lbls], Is, Acc, St);
error -> opt(Is, [I|Acc], St0)
end;
@@ -339,7 +339,7 @@ opt([{jump,{f,L}=Lbl}=I|Is], Acc0, #st{mlbl=Mlbl0}=St0) ->
St = case Lbls of
[] -> St0;
[_|_] ->
- Mlbl = dict:append_list(L, Lbls, Mlbl0),
+ Mlbl = maps_append_list(L, Lbls, Mlbl0),
St0#st{mlbl=Mlbl}
end,
skip_unreachable(Is, [I|Acc], label_used(Lbl, St));
@@ -363,14 +363,20 @@ opt([I|Is], Acc, #st{labels=Used0}=St0) ->
end;
opt([], Acc, #st{fc=Fc,mlbl=Mlbl}) ->
Code = reverse(Acc),
- case dict:find(Fc, Mlbl) of
+ case maps:find(Fc, Mlbl) of
{ok,Lbls} -> insert_fc_labels(Lbls, Mlbl, Code);
error -> Code
end.
+maps_append_list(K,Vs,M) ->
+ case M of
+ #{K:=Vs0} -> M#{K:=Vs0++Vs}; % same order as dict
+ _ -> M#{K => Vs}
+ end.
+
insert_fc_labels([L|Ls], Mlbl, Acc0) ->
Acc = [{label,L}|Acc0],
- case dict:find(L, Mlbl) of
+ case maps:find(L, Mlbl) of
error ->
insert_fc_labels(Ls, Mlbl, Acc);
{ok,Lbls} ->